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Sleep Cycle Calculator

Identify bedtime schedules based on 90-minute REM sleep cycles to wake up feeling refreshed.

Calculator Inputs

Goal Choice

Results

Optimal Time Option 1 (6 Cycles)01:27 PM

Optimal Time Option 2 (5 Cycles)11:57 AM

Minimum Time Option 3 (4 Cycles)10:27 AM

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Frequently Asked Questions

What is a sleep cycle?

Human sleep is structured in 90-minute cycles containing light sleep, deep sleep, and REM phases. Waking up at the end of a cycle makes you feel refreshed.

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